This is the amazing Demeter HBP-1 preamp, which features an all-tube preamp and switchable solid state EQ section and effects loop, making it an extremely versatile tone machine. It has the usual small scratches from being in an equipment rack but it is otherwise in very good shape.

The HBP-1 H Series Tube Bass Preamplifier by James Demeter uses the same all tube front end found in his classic VTBP-201 Bass pre-amplifier and combines it with the revolutionary H Series circuitry found in his professional audio H Series line. This preamplifier provides the best of both the tube and solid state world. It features high voltage (250V) tube front end (providing all of the preamplifier gain and passive tone controls), a two band solid state fully parametric equalizer that is tuned for bass, a fully adjustable active effects loop with controls up front, a tuner output, a full balanced output with switchable mic or line level, both a balanced TRS line level output and an unbalanced line level output for amplifier connections and a mute switch. As with all Demeter equipment, it is meticulously hand-wired using the finest components and assembled in the U.S.A.

It is the standard model, which does NOT have the Jensen transformer as far as I know. Over the years I've heard people swear by their Jensen-equipped units in general, but I've really never felt I've been missing anything when I've either played a live gig or been recording with this one. Then again, I've not exactly been recording in the multi-million dollar studios around here or in LA or NYC.

I'm not really interested in a trade - sorry. I have an extremely adequate QSC power amp in the rack already so I'm mainly just swapping the pre.